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公开(公告)号：US11745552B2
公开(公告)日：2023-09-05
申请号：US17180269
申请日：2021-02-19
申请人： Caterpillar Inc.
发明人： John James Krone , Daniel Peter Sergison , Edward William Mate , Jeremy T. Peterson , Bradly Glen Duffer , Matthew Stephen Marquette
CPC分类号： B60D1/246 , B60D1/30 , B60D1/62 , B62D13/005
摘要： A machine includes a frame and an oscillating hitch. A first cylinder couples to a first side of the oscillating hitch and a first side of the frame. A second cylinder couples to a second side of the oscillating hitch and a second side of the frame. A first isolating mechanism couples to the first cylinder and rotates in response to a first rotation of the first cylinder relative to the frame or the oscillating hitch. A first angle sensor senses a first angular displacement of the first isolating mechanism about a first rotational axis. A second isolating mechanism couples to the second cylinder and rotates in response to a second rotation of the second cylinder relative to the frame or the oscillating hitch. A second angle sensor senses a second angular displacement of the second isolating mechanism about a second rotational axis.
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公开(公告)号：US20180162441A1
公开(公告)日：2018-06-14
申请号：US15373558
申请日：2016-12-09
申请人： Caterpillar Inc.
摘要： An emergency steering pump system for a primary pump providing a standby pressure via a primary output line includes a load sense line that is configured to branch-off from the primary output line. The load sense line has a first orifice disposed therein. A secondary pump is included for providing a margin pressure via a secondary output line that is coupled to the primary output line at a point downstream of the load sense line. A communication line is coupled to the primary output line at a point upstream of the load sense line. The communication line has a pressure control mechanism disposed therein. An output of the pressure control mechanism is coupled with an unloader valve of the secondary pump such that the pressure control mechanism is configured to bring about the margin pressure from the secondary pump.
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公开(公告)号：US09248854B2
公开(公告)日：2016-02-02
申请号：US13856733
申请日：2013-04-04
申请人： Caterpillar Inc.
摘要： A steering control system includes a steering circuit, a primary control circuit and a redundant control circuit. The primary control circuit includes primary proportional control valves, and a primary pilot valve having a thermal bleed of pilot fluid to warm the primary pilot valve when not operating to control the steering circuit. The redundant control circuit includes secondary proportional control valves, and a pressure reducing valve having a thermal bleed orifice allowing fluid flow to warm the pressure reducing valve when not operating to control the steering circuit. The thermal bleeds may also flow past the proportional control valves to raise their temperatures. The circuits of the steering control system are contained in a single valve group housing.
摘要翻译： 转向控制系统包括转向电路，主控制电路和冗余控制电路。 主控制电路包括初级比例控制阀和主导向阀，当未操作以控制转向回路时，主导阀具有先导流体的热泄放以加热主导阀。 冗余控制电路包括二次比例控制阀，以及具有热泄漏孔的减压阀，当不操作以控制转向回路时允许流体流动来加热减压阀。 热过滤器也可能流经比例控制阀以升高其温度。 转向控制系统的回路包含在单个阀组壳体中。
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公开(公告)号：US11787255B2
公开(公告)日：2023-10-17
申请号：US17479149
申请日：2021-09-20
申请人： Caterpillar Inc.
IPC分类号： B60G17/08 , B60G13/08 , B60G13/14 , B60G17/0165 , B60P1/04
CPC分类号： B60G17/08 , B60G13/08 , B60G13/14 , B60G17/0165 , B60G2202/24 , B60G2204/62 , B60G2206/41 , B60G2300/0262 , B60G2400/252 , B60G2400/5182 , B60G2400/60 , B60G2500/104 , B60G2500/114 , B60G2500/322 , B60G2600/182 , B60G2800/162 , B60G2800/914 , B60G2800/916 , B60P1/04
摘要： A machine includes a first cylinder coupled to a first wheel and a second cylinder coupled to a second wheel. A first proportional dampening valve fluidly connects to the first cylinder and a second proportional dampening valve fluidly connects to the second cylinder. First accumulators are fluidly connected to the first cylinder and the first proportional dampening valve, and second accumulator(s) are fluidly connected to the second cylinder and the second proportional dampening valve. Additionally, a first proportional flow control valve fluidly connects to the first cylinder and a second proportional flow control valve fluidly connected to the second cylinder. An electronic control module (ECM) communicatively couples to the first proportional flow control valve and the second proportional flow control valve to adjust a ride height of the first wheel via the first cylinder and a ride height of the second wheel via the second cylinder.
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公开(公告)号：US10259493B2
公开(公告)日：2019-04-16
申请号：US15373558
申请日：2016-12-09
申请人： Caterpillar Inc.
摘要： An emergency steering pump system for a primary pump providing a standby pressure via a primary output line includes a load sense line that is configured to branch-off from the primary output line. The load sense line has a first orifice disposed therein. A secondary pump is included for providing a margin pressure via a secondary output line that is coupled to the primary output line at a point downstream of the load sense line. A communication line is coupled to the primary output line at a point upstream of the load sense line. The communication line has a pressure control mechanism disposed therein. An output of the pressure control mechanism is coupled with an unloader valve of the secondary pump such that the pressure control mechanism is configured to bring about the margin pressure from the secondary pump.
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公开(公告)号：US11788828B1
公开(公告)日：2023-10-17
申请号：US17856656
申请日：2022-07-01
申请人： Caterpillar Inc.
发明人： Jeremy T. Peterson , Daniel P. Sergison , Edward William Mate , Jeffrey L. Kuehn , Andrew J. de Haseth
IPC分类号： G01B7/315
CPC分类号： G01B7/315
摘要： A device for measuring rotation of a spherical joint in a steering system, may include an anchor secured within a ball stud of the spherical joint and a rotational tie having a first end and a second end. The first end of the rotational tie may be secured to the anchor to hold the first end parallel to a longitudinal axis of the ball stud. The device may also include a rotation sensor including a sensor target rotationally coupled to the second end of the rotational tie and secured for free rotation to a framework of the spherical joint. The rotation sensor may also include an angle sensor configured and arranged to sense a changing angle of the sensor target.
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公开(公告)号：US11731690B2
公开(公告)日：2023-08-22
申请号：US16788998
申请日：2020-02-12
申请人： Caterpillar Inc.
发明人： Edward William Mate
摘要： A redundant steering system comprises a primary power source; a secondary power source; first and second pumps operatively coupled to the primary and secondary power sources, respectively, to output first and second supplies of hydraulic fluid to a steering cylinder based on operation of the primary and secondary power source, respectively; first and second pairs of selector valves respectively coupled to the first and second pumps; and a charge circuit coupled to respective control inputs of the first and second pairs of selector valves to selectively supply hydraulic fluid to the control inputs of the first and second pairs of selector valves to stop hydraulic fluid from only one of the first pump and the second pump from being provided to the steering cylinder and to provide hydraulic fluid to the steering cylinder from only one of the other of the first pump and the second pump.
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公开(公告)号：US09050999B2
公开(公告)日：2015-06-09
申请号：US13750635
申请日：2013-01-25
申请人： Caterpillar Inc.
摘要： A steering system and method for providing a force feedback to an operator input device are disclosed. The method may determine an actual position of the operator input device. The method may determine a desired steering mechanism position of a steering mechanism based on the actual position of the operator input device. The method may determine an actual steering mechanism position of the steering mechanism. The method may compare the actual steering mechanism position to the desired steering mechanism position and to a previous desired steering mechanism position. The method may generate a command that selectively activates force feedback to the operator input device based on the comparison.
摘要翻译： 公开了一种用于向操作者输入装置提供力反馈的转向系统和方法。 该方法可以确定操作者输入装置的实际位置。 该方法可以基于操作者输入装置的实际位置来确定转向机构的期望转向机构位置。 该方法可以确定转向机构的实际转向机构位置。 该方法可以将实际的转向机构位置与期望的转向机构位置和先前期望的转向机构位置进行比较。 该方法可以生成基于比较选择性地激活对操作者输入装置的力反馈的命令。
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公开(公告)号：US20230088419A1
公开(公告)日：2023-03-23
申请号：US17479149
申请日：2021-09-20
申请人： Caterpillar Inc.
IPC分类号： B60G17/08 , B60G13/08 , B60G17/0165 , B60G13/14
摘要： A machine includes a first cylinder coupled to a first wheel and a second cylinder coupled to a second wheel. A first proportional dampening valve fluidly connects to the first cylinder and a second proportional dampening valve fluidly connects to the second cylinder. First accumulators are fluidly connected to the first cylinder and the first proportional dampening valve, and second accumulator(s) are fluidly connected to the second cylinder and the second proportional dampening valve. Additionally, a first proportional flow control valve fluidly connects to the first cylinder and a second proportional flow control valve fluidly connected to the second cylinder. An electronic control module (ECM) communicatively couples to the first proportional flow control valve and the second proportional flow control valve to adjust a ride height of the first wheel via the first cylinder and a ride height of the second wheel via the second cylinder.
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10.发明授权公开(公告)号：US10273962B2
公开(公告)日：2019-04-30
申请号：US15275784
申请日：2016-09-26
申请人： Caterpillar Inc.
IPC分类号： F04D25/04 , F16H61/4035 , F16H61/4148 , F01P7/04
摘要： A hydraulic system is provided to selectively and independently route pressurized fluid to one or more operational systems of a machine. The hydraulic system is capable of switching fluid flow in operation from one of the operational systems to another of the operational systems in the event of hydraulic drive power being required by the latter one of the operational systems. The hydraulic system is also configured to continue supplying a nominal amount of fluid to support one or more auxiliary functions, for example, a lubrication system for bearings associated with the former one of the operational systems while routing the pressurized fluid to the latter one of the operational systems. A recirculation and anti-cavitation arrangement is also provided to allow recirculation of fluid to a hydraulic motor in the former one of the operational systems when pressurized fluid is being routed to the latter one of the operational systems.
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